diff --git a/ontoScorer/metric_score.py b/ontoScorer/metric_score.py
index 4a10bc205614c7c8ef5a9e120464651b85182924..646f90b8b7c96845187d369d482427630bb7a70a 100644
--- a/ontoScorer/metric_score.py
+++ b/ontoScorer/metric_score.py
@@ -47,7 +47,7 @@ class Score:
         self.y_true = y_true
         self.y_pred = y_pred
         if len(y_true) > 0:
-            self.precision = precision_score(y_true, y_pred)
+            self.precision = precision_score(y_true, y_pred, zero_division=1)
             self.recall = recall_score(y_true, y_pred)
             self.f1 = f1_score(y_true, y_pred)
             self.total_elements = len(y_true)